I got mine over the weekend, very excited... after I took old pipe off, right before I installed the new pipe... I looked inside and noticed that it had all kinds of gunk and dirt inside the pipe. It even has a 1 to 1.5 inch long melted piece of metal hanging inside that pipe, probably from the weld of the recir tube. I tried to break it off by pushing it with a screw driver (the only thing that can reach it) but it didn't budge so I left it there and cleaned everything the best that I can and installed it. That hanging piece of metal probably won't come off but it's not comforting knowing that it's there... it probably won't affect the airflow much but it's still not very comforting... so I was a little disappointed in that department.
As far as the performance goes, I didn't have too much time to test it yet but first impression... It's louder, it's boost quicker and harder and shift smoother. I think I heard my bpv opening while under high boost too so I think I need to adjust it to make it stiffer. More testing still needed.
Still not very comforting knowing that there's a piece of metal hanging in my inlet pipe very close to the turbo...